Update a namespace name in consuming-nuget-package.md (#6914)
Update a namespace name in consuming-nuget-package.md (#6914)

* Update namespace name in consuming-nuget-package.md
sean-gilliam/msbuild,AndyGerlicher/msbuild,rainersigwald/msbuild,sean-gilliam/msbuild,rainersigwald/msbuild,AndyGerlicher/msbuild,rainersigwald/msbuild,AndyGerlicher/msbuild,AndyGerlicher/msbuild,sean-gilliam/msbuild,rainersigwald/msbuild,sean-gilliam/msbuild